package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 登录
     * @param req
     * @param employee
     * @return
     */
    @PostMapping("/login")
//    @RequestBody 表示将请求的 JSON 数据转换为 Employee 对象。
//    HttpServletRequest req:为了获取session 存用户数据
    public R<Employee> login(HttpServletRequest req, @RequestBody Employee employee){
//        1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password= DigestUtils.md5DigestAsHex(password.getBytes());
//        2 根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
//        3 如果没有查询到则返回登录失败结果
        if(emp==null){
            return R.error("登录失败");
        }
//        4 密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }
//        5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus()==0){
            return R.error("登录已经禁用");
        }
//        6、登录成功，将员工id存入Session并返回登录成功结果
        req.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param req
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest req){
        req.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    @PostMapping
    public R<String> sava(HttpServletRequest req,@RequestBody Employee employee){
//        设置初始值：默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//        获取用户id
//        Long empId = (Long) req.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);
        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page={},pagesize={},name={}",page,pageSize,name);
//        构造分页构造器
        Page pageInfo = new Page(page,pageSize);
//        构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper =new LambdaQueryWrapper();
//        添加过滤条件 name不为空
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
//        添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }

    @PutMapping
    public R<String> update(HttpServletRequest req,@RequestBody Employee employee){
        employee.setUpdateUser((Long) req.getSession().getAttribute("employee"));
        employee.setUpdateTime(LocalDateTime.now());
        employeeService.updateById(employee);
        return R.success("员工修改成功");
    }

    @GetMapping("/{id}") /*接收路径变量*/
    public R<Employee> getById(@PathVariable Long id){
        Employee employee = employeeService.getById(id);
        if(employee!=null){
            return R.success(employee);
        }
        return R.error("没有查到该员工");
    }

}
